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Jones AW. Brief history of the alcohol biomarkers CDT, EtG, EtS, 5-HTOL, and PEth. Drug Test Anal 2024; 16:570-587. [PMID: 37806783 DOI: 10.1002/dta.3584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/10/2023]
Abstract
This article traces the historical development of various biomarkers of acute and/or chronic alcohol consumption. Much of the research in this domain of clinical and laboratory medicine arose from clinics and laboratories in Sweden, as exemplified by carbohydrate deficient transferrin (CDT) and phosphatidylethanol (PEth). Extensive studies of other alcohol biomarkers, such as ethyl glucuronide (EtG), ethyl sulfate (EtS), and 5-hydroxytryptophol (5-HTOL), also derive from Sweden. The most obvious test of recent drinking is identification of ethanol in a sample of the person's blood, breath, or urine. However, because of continuous metabolism in the liver, ethanol is eliminated from the blood at a rate of 0.15 g/L/h (range 0.1-0.3 g/L/h), so obtaining positive results is not always possible. The widow of detection is increased by analysis of ethanol's non-oxidative metabolites (EtG and EtS), which are more slowly eliminated from the bloodstream. Likewise, an elevated ratio of serotonin metabolites in urine (5-HTOL/5-HIAA) can help to disclose recent drinking after ethanol is no longer measurable in body fluids. A highly specific biomarker of hazardous drinking is CDT, a serum glycoprotein (transferrin), with a deficiency in its N-linked glycosylation. Another widely acclaimed biomarker is PEth, an abnormal phospholipid synthesized in cell membranes when people drink excessively, having a long elimination half-life (median ~6 days) during abstinence. Research on the subject of alcohol biomarkers has increased appreciably and is now an important area of drug testing and analysis.
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Affiliation(s)
- Alan Wayne Jones
- Division of Clinical Chemistry and Pharmacology, Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Sciences, University of Linköping, Linköping, Sweden
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Cinquetti A, Terranova C, Aprile A, Favretto D. Driving license regranting: Hair EtG, serum CDT, and the role of sociodemographic and medicolegal variables. Drug Test Anal 2023; 15:953-961. [PMID: 36525282 DOI: 10.1002/dta.3426] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/11/2022] [Accepted: 11/22/2022] [Indexed: 12/23/2022]
Abstract
Driving under the influence (DUI) of alcohol is a road safety problem. Driving license regranting is based on the evaluation of medicolegal and toxicological variables that may include serum carbohydrate-deficient transferrin (CDT) and hair ethyl glucuronide (hEtG). The aim of the study was to compare the diagnostic performance of CDT and hEtG in a population of DUI offenders. Other factors potentially associated with heavy alcohol use were explored. The population included DUI offenders examined during the period of January 1, 2019, through June 30, 2022. Sociodemographic, medicolegal, and toxicological variables were collected. CDT in serum and EtG in head hair were determined in all subjects. Excessive alcohol intake (hEtG ≥30 pg/mg) was considered cause for unfitness to drive. Cohen's kappa coefficient was calculated. Descriptive analyses were performed using chi-square and Mann-Whitney tests. Variables significantly different between the groups were included in a multivariate binary logistic regression model. The sample encompassed 838 subjects (case group: 179, comparison group: 689). CDT exhibited poor agreement (κ = 0.053) with hEtG as the reference test. Lower education, age at DUI, heavy smoking, and GGT levels associated with heavy alcohol consumption differentiated the two groups. For DUI offenders, the use of CDT to assess heavy alcohol consumption is limited, possibly due to the time-window assessed, the time required for normalization, and the different amount of ethanol needed to reach higher CDT levels, in comparison to hEtG; thus, hEtG assessment is strongly recommended for this population. Heavy smoking, GGT, education, and age could be related to heavy alcohol consumption and higher risk of DUI.
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Affiliation(s)
- Alessandro Cinquetti
- Legal Medicine and Toxicology, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Claudio Terranova
- Legal Medicine and Toxicology, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Anna Aprile
- Legal Medicine and Toxicology, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
| | - Donata Favretto
- Legal Medicine and Toxicology, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, Padua, Italy
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Neuman MG, Seitz HK, Teschke R, Malnick S, Johnson-Davis KL, Cohen LB, German A, Hohmann N, Moreira B, Moussa G, Opris M. Molecular, Viral and Clinical Features of Alcohol- and Non-Alcohol-Induced Liver Injury. Curr Issues Mol Biol 2022; 44:1294-1315. [PMID: 35723310 PMCID: PMC8947098 DOI: 10.3390/cimb44030087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/06/2022] [Accepted: 03/14/2022] [Indexed: 01/08/2023] Open
Abstract
Hepatic cells are sensitive to internal and external signals. Ethanol is one of the oldest and most widely used drugs in the world. The focus on the mechanistic engine of the alcohol-induced injury has been in the liver, which is responsible for the pathways of alcohol metabolism. Ethanol undergoes a phase I type of reaction, mainly catalyzed by the cytoplasmic enzyme, alcohol dehydrogenase (ADH), and by the microsomal ethanol-oxidizing system (MEOS). Reactive oxygen species (ROS) generated by cytochrome (CYP) 2E1 activity and MEOS contribute to ethanol-induced toxicity. We aimed to: (1) Describe the cellular, pathophysiological and clinical effects of alcohol misuse on the liver; (2) Select the biomarkers and analytical methods utilized by the clinical laboratory to assess alcohol exposure; (3) Provide therapeutic ideas to prevent/reduce alcohol-induced liver injury; (4) Provide up-to-date knowledge regarding the Corona virus and its affect on the liver; (5) Link rare diseases with alcohol consumption. The current review contributes to risk identification of patients with alcoholic, as well as non-alcoholic, liver disease and metabolic syndrome. Additional prevalence of ethnic, genetic, and viral vulnerabilities are presented.
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Affiliation(s)
- Manuela G. Neuman
- In Vitro Drug Safety and Biotechnology and the Department of Pharmacology and Toxicology, Temerity Faculty of Medicine, University of Toronto, Toronto, ON M5G 1L5, Canada; (G.M.); (M.O.)
- Correspondence:
| | - Helmut K. Seitz
- Centre of Liver and Alcohol Diseases, Ethianum Clinic and Department of Clinical Pharmacology and Pharmacoepidemiology, Faculty of Medicine, University of Heidelberg, 69115 Heidelberg, Germany; (H.K.S.); (N.H.); (B.M.)
| | - Rolf Teschke
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, Klinikum Hanau, Hanau, Academic Teaching Hospital of the Medical Faculty, Goethe University Frankfurt/Main, 60323 Frankfurt, Germany;
| | - Stephen Malnick
- Department of Internal Medicine C. Kaplan Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Rehovot 76100, Israel; (S.M.); (A.G.)
| | - Kamisha L. Johnson-Davis
- Department of Pathology, University of Utah Health Sciences Centre and Division of Toxicology, ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT 84115, USA;
| | - Lawrence B. Cohen
- Division of Gastroenterology, Sunnybrook Health Sciences Centre and Department of Medicine, Temerity Faculty of Medicine, University of Toronto, Toronto, ON M4N 3N5, Canada;
| | - Anit German
- Department of Internal Medicine C. Kaplan Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Rehovot 76100, Israel; (S.M.); (A.G.)
| | - Nicolas Hohmann
- Centre of Liver and Alcohol Diseases, Ethianum Clinic and Department of Clinical Pharmacology and Pharmacoepidemiology, Faculty of Medicine, University of Heidelberg, 69115 Heidelberg, Germany; (H.K.S.); (N.H.); (B.M.)
| | - Bernhardo Moreira
- Centre of Liver and Alcohol Diseases, Ethianum Clinic and Department of Clinical Pharmacology and Pharmacoepidemiology, Faculty of Medicine, University of Heidelberg, 69115 Heidelberg, Germany; (H.K.S.); (N.H.); (B.M.)
| | - George Moussa
- In Vitro Drug Safety and Biotechnology and the Department of Pharmacology and Toxicology, Temerity Faculty of Medicine, University of Toronto, Toronto, ON M5G 1L5, Canada; (G.M.); (M.O.)
| | - Mihai Opris
- In Vitro Drug Safety and Biotechnology and the Department of Pharmacology and Toxicology, Temerity Faculty of Medicine, University of Toronto, Toronto, ON M5G 1L5, Canada; (G.M.); (M.O.)
- Family Medicine Clinic CAR, 010362 Bucharest, Romania
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Veronesi A, Cariani E, Trenti T, Rota C. Carbohydrate-deficient transferrin: utility of HPLC in handling atypical samples uninterpretable by capillary electrophoresis. Alcohol Alcohol 2019; 54:510-515. [DOI: 10.1093/alcalc/agz059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 06/25/2019] [Indexed: 11/14/2022] Open
Abstract
HPLC retesting allowed to resolve about half of the most common CDT patterns uninterpretable by CE. The usefulness of this approach should be evaluated in the specific context of each laboratory.
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Affiliation(s)
- Agnese Veronesi
- Laboratory of Toxicology and Advanced Diagnostics, Department of Laboratory Medicine, Ospedale Civile S. Agostino-Estense, Modena, Italy
| | - Elisabetta Cariani
- Laboratory of Toxicology and Advanced Diagnostics, Department of Laboratory Medicine, Ospedale Civile S. Agostino-Estense, Modena, Italy
| | - Tommaso Trenti
- Laboratory of Toxicology and Advanced Diagnostics, Department of Laboratory Medicine, Ospedale Civile S. Agostino-Estense, Modena, Italy
| | - Cristina Rota
- Laboratory of Toxicology and Advanced Diagnostics, Department of Laboratory Medicine, Ospedale Civile S. Agostino-Estense, Modena, Italy
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Caslavska J, Thormann W. Monitoring of transferrin isoforms in biological samples by capillary electrophoresis. J Sep Sci 2017; 41:303-322. [PMID: 28885776 DOI: 10.1002/jssc.201700914] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 09/04/2017] [Accepted: 09/04/2017] [Indexed: 11/10/2022]
Abstract
Work dealing with the monitoring of transferrin isoforms in human serum and other body fluids by capillary electrophoresis is reviewed. It comprises capillary zone electrophoresis and capillary isoelectric focusing efforts that led to the exploration and use of assays for the determination of carbohydrate-deficient transferrin as a marker for excessive alcohol intake, genetic variants of transferrin, congenital disorders of glycosylation and β-2-transferrin, which is a marker for cerebrospinal fluid leakage. This paper provides insight into the development, specifications, strengths, weaknesses, and routine use of the currently known capillary electrophoresis based assays suitable to detect transferrin isoforms in body fluids. The achievements reached so far indicate that capillary zone electrophoresis is an attractive technology to monitor the molecular forms of transferrin in biological specimens as the assays do not require an elaborate sample pretreatment and thus can be fully automated for high-throughput analyses on multicapillary instruments. Assays based on capillary isoelectric focusing are less attractive. They require immunoextraction of transferrin from the biological matrix and mobilization after focusing if instrumentation with a whole-column imaging detector is not available. Interactions of the carrier ampholytes with the iron of transferrin may prevent iron saturation and thus provide more complicated isoform patterns.
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Affiliation(s)
- Jitka Caslavska
- Clinical Pharmacology Laboratory, Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Wolfgang Thormann
- Clinical Pharmacology Laboratory, Institute for Infectious Diseases, University of Bern, Bern, Switzerland
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Bortolotti F, Sorio D, Bertaso A, Tagliaro F. Analytical and diagnostic aspects of carbohydrate deficient transferrin (CDT): A critical review over years 2007-2017. J Pharm Biomed Anal 2017; 147:2-12. [PMID: 28912047 DOI: 10.1016/j.jpba.2017.09.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 08/30/2017] [Accepted: 09/01/2017] [Indexed: 02/07/2023]
Abstract
The need for investigating alcohol abuse by means of objective tools is worldwide accepted. Among the currently available biomarkers of chronic alcohol abuse, carbohydrate-deficient transferrin (CDT) is one of the most used indicator, mainly because of its high specificity. However, some CDT analytical and interpretation aspects are still under discussion, as witnessed by numerous research papers and reviews. The present article presents a critical review of the literature on CDT appeared in the period from 2007 to 2017 (included). The article is organized in the following sections: (1) introduction, (2) pre-analytical aspects (3) analytical aspects (4) diagnostic aspects (5) concluding remarks. As many as 139 papers appeared in the international literature and retrieved by the search engines PubMed, Web of Science and Scopus are quoted.
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Affiliation(s)
- F Bortolotti
- Dept of Diagnostics and Public Health, Unit of Forensic Medicine, University of Verona, Italy.
| | - D Sorio
- Dept of Diagnostics and Public Health, Unit of Forensic Medicine, University of Verona, Italy
| | - A Bertaso
- Dept of Diagnostics and Public Health, Unit of Forensic Medicine, University of Verona, Italy
| | - F Tagliaro
- Dept of Diagnostics and Public Health, Unit of Forensic Medicine, University of Verona, Italy; Institute of Pharmacy and Translational Medicine, Sechenov First Medical University, Moskow, Russia
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Fluorescent adduct formation with terbium: a novel strategy for transferrin glycoform identification in human body fluids and carbohydrate-deficient transferrin HPLC method validation. Anal Bioanal Chem 2016; 409:1369-1378. [DOI: 10.1007/s00216-016-0069-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 10/26/2016] [Indexed: 11/26/2022]
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Barbaro M, Passerini G, Trbos M, Soldarini A, Locatelli M. An increased CDT camouflaged a monoclonal light chain gammopathy: An approach for diagnosis. Clin Biochem 2016; 49:835-8. [DOI: 10.1016/j.clinbiochem.2016.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 03/15/2016] [Accepted: 03/16/2016] [Indexed: 11/17/2022]
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